MESON Chess Problem Database
Problem Display
PID: 151411 (8/1pp1K3/1pP1Np2/1B1krR2/5Rp1/1n1P2B1/8/8 w - - 0 1)
Stephenson, Brian D
Hull Chess Club Magazine, 1995
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxf5
- 2.Rxf5#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...bxc6
- 2.Bc4#
- 1...Rxf5
- Tries
- 1.Kd7?
- threat
- 2.Bc4#
- 1...Rxf5
- 2.Rxf5#
- 1...Sd2
- 2.Rd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5+!
- threat
- 1.Be1?
- 1...Rxf5
- 2.Rxf5#
- 1...bxc6
- 2.Bc4#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...g3!
- 1...Rxf5
- 1.Bf2?
- 1...Rxf5
- 2.Rxf5#
- 1...bxc6
- 2.Bc4#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...g3!
- 1...Rxf5
- 1.Bh2?
- 1...Rxf5
- 2.Rxf5#
- 1...bxc6
- 2.Bc4#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...g3!
- 1...Rxf5
- 1.Bh4?
- 1...Rxf5
- 2.Rxf5#
- 1...bxc6
- 2.Bc4#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...g3!
- 1...Rxf5
- 1.Ba4?
- 1...Rxf5
- 2.Rxf5#
- 1...bxc6
- 2.Bxb3#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...b5!
- 1...Rxf5
- 1.Ra4?
- 1...bxc6
- 2.Bc4#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...Rxf5!
- 1...bxc6
- 1.Rb4?
- 1...bxc6
- 2.Bc4#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...Rxf5!
- 1...bxc6
- 1.Re4?
- 1...bxc6
- 2.Bc4#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...Rxf5!
- 1...bxc6
- 1.Rxg4?
- 1...bxc6
- 2.Bc4#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...Rxf5!
- 1...bxc6
- 1.cxb7?
- 1...Rxf5
- 2.Rxf5#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...c6
- 2.Bc4#
- 1...c5!
- 1...Rxf5
- 1.Kd7?
- Keys
- 1.Rc4!
- 1...Rxf5
- 2.Sxc7#
- 1...bxc6
- 2.Bxc6#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...Rxf5
- 1.Rc4!
This is a version of 21955
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(d);N_PINS(G),N_SPINR(d),OGATE,XR(E)::R(C),XR(d)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- P(g);SBLOCK,XP(F)::B(D)
- Tries
- Try
- K(H);N_SPINS(G),P-FLIGHT
- Threat
- B(D)
- Vars
- R(d);N_SPINR(d),OGATE,XR(E)::R(C),XR(d)
- S(a);N_GUARD::R1(C)
- Refutation
- S(a);CHECK
- Try
- B(B);
- Vars
- R(d);N_PINS(G),N_SPINR(d),OGATE,XR(E)::R(C),XR(d)
- P(g);SBLOCK,XP(F)::B(D)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- P(b);
- Try
- B(B);
- Vars
- R(d);N_PINS(G),N_SPINR(d),OGATE,XR(E)::R(C),XR(d)
- P(g);SBLOCK,XP(F)::B(D)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- P(b);
- Try
- B(B);
- Vars
- R(d);N_PINS(G),N_SPINR(d),OGATE,XR(E)::R(C),XR(d)
- P(g);SBLOCK,XP(F)::B(D)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- P(b);
- Try
- B(B);
- Vars
- R(d);N_PINS(G),N_SPINR(d),OGATE,XR(E)::R(C),XR(d)
- P(g);SBLOCK,XP(F)::B(D)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- P(b);
- Try
- B(D);
- Vars
- R(d);N_PINS(G),N_SPINR(d),OGATE,XR(E)::R(C),XR(d)
- P(g);SBLOCK,XP(F)::B(D),XS(a)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- P(e);
- Try
- R(C);
- Vars
- P(g);SBLOCK,XP(F)::B(D)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- R(d);N_PINS(G),N_SPINR(d),XR(E)
- Try
- R(C);
- Vars
- P(g);SBLOCK,XP(F)::B(D)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- R(d);N_PINS(G),N_SPINR(d),XR(E)
- Try
- R(C);
- Vars
- P(g);SBLOCK,XP(F)::B(D)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- R(d);N_PINS(G),N_SPINR(d),XR(E)
- Try
- R(C);XP(b)
- Vars
- P(g);SBLOCK,XP(F)::B(D)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- R(d);N_PINS(G),N_SPINR(d),XR(E)
- Try
- P(F);XP(g)
- Vars
- R(d);N_PINS(G),N_SPINR(d),OGATE,XR(E)::R(C),XR(d)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- P(h);SBLOCK::B(D)
- Refutation
- P(h);
- Try
- Actual
- R(C);
- Vars
- R(d);N_PINS(G),N_SPINR(d),XR(E)::S(G),XP(h)
- P(g);OGATE,XP(F)::B(D),XP(g)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).